PDA

View Full Version : Classic lens for 16x20



aalenia
15-Jun-2006, 04:58
Hello, i'v build my first 16x20 camera, i 'm using a 480 apo ronnar lens, and i have an opportunity to get a 500 mm KRAUSS tessar 6.3 Barrel Lens, it seems to cover 11x14, does somebody know if this covers the 16x20 format?
Thanks in advance

Ole Tjugen
15-Jun-2006, 07:54
16x20" is what's known as 40x50cm over here, which has a diagonal of about 640mm. A Tessar lens just about covers a diagonal equal to the focal length (plus a very little bit), so the 500 Krauss Tessar won't cover at infinity. It should be a great lens for 30x40cm (12x16"), though...

There's a good list of ULF lenses at www.mamutphoto.com which might be worth looking at.

aalenia
15-Jun-2006, 14:03
thanks for your answer Ole,
it's very useful for me 30x40 cm is exactly the format i use, i'll see what i produce.
A few years ago, i was in Siberia, in the surroundings of yekateringburg, and i discovered a 30x40 camera, using a big LOMO lens, not a FKD industar optic, i forgot about it until.... i found that on ebay :
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7621764117&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1
it's not a projector lens, i appreciated the sharpness of russian optics, i'm curious to see the value of this Lens.

robc
15-Jun-2006, 14:22
how about this Nikon:

http://www.rcomputers.co.uk/mxv/largeformat.asp

on the second page of Large Format kit.

Nikon 1200 f18 Nikkor T ED set incl 600 Conversion Copal 3 Boxed was 1950****** Unused 1495

Arne Croell
15-Jun-2006, 15:25
i found that on ebay :
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7621764117&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1
it's not a projector lens, i appreciated the sharpness of russian optics, i'm curious to see the value of this Lens.
The lens you got is the Russian version of a 600mm/24" Apo-Ronar or Apo-Artar (dialyte type), the official coverage is 45 for process work, which translates into an image circle of 500mm at infinity. Actual useable coverage for contact prints might be a little larger.

Arne Croell
15-Jun-2006, 15:29
how about this Nikon:

http://www.rcomputers.co.uk/mxv/largeformat.asp

on the second page of Large Format kit.

Nikon 1200 f18 Nikkor T ED set incl 600 Conversion Copal 3 Boxed was 1950****** Unused 1495
That is a telephoto type and just covers 8x10 - Nikons number for the image circle(s) is 310mm at f/22.

robc
15-Jun-2006, 16:00
That is a telephoto type and just covers 8x10 - Nikons number for the image circle(s) is 310mm at f/22.

I stand corrected...

Ole Tjugen
16-Jun-2006, 00:26
On my 30x40cm camera, I've used a 210mm f:6.8 Angulon (pre-WWII), a 480mm f:9 Apo-Ronar, and a monstrous 800mm f:8 Aplanat (pre-1900). Next "experiment" will be the longest elments of a Vade Mecum casket set (65 and 75cm meniscus lenses singly, and togerther in "wide-angle" configuration). There are lenses to be found, but it's not always easy.